Make precompiler work with product mode.

runtime/bin/main.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_tools_api.h"
@@ skipping 322 matching lines @@
                   " dart_no_snapshot.\n");
     return false;
   }
   ASSERT(arg != NULL);
   if ((arg[0] == '=') || (arg[0] == ':')) {
     precompiled_snapshot_directory = &arg[1];
   } else {
     precompiled_snapshot_directory = arg;
   }
   gen_precompiled_snapshot = true;
-#if !defined(DART_PRECOMPILED_RUNTIME)
-  // The precompiled runtime has FLAG_precompilation set as const.
   vm_options->AddArgument("--precompilation");
-#endif
   return true;
 }
 
 
 static bool ProcessRunPrecompiledSnapshotOption(
     const char* arg,
     CommandLineOptions* vm_options) {
   ASSERT(arg != NULL);
   precompiled_snapshot_directory = arg;
   if ((precompiled_snapshot_directory[0] == '=') ||
       (precompiled_snapshot_directory[0] == ':')) {
     precompiled_snapshot_directory = &precompiled_snapshot_directory[1];
   }
   run_precompiled_snapshot = true;
-#if !defined(DART_PRECOMPILED_RUNTIME)
-  // The precompiled runtime has FLAG_precompilation set as const.
   vm_options->AddArgument("--precompilation");
-#endif
   return true;
 }
 
 
 static bool ProcessSnapshotOptionHelper(const char* filename,
                                         bool* snapshot_option) {
   ASSERT((filename != NULL) && (strlen(filename) != 0));
   snapshot_filename = filename;
   *snapshot_option = true;
   if (generate_script_snapshot && generate_full_snapshot_after_run) {
@@ skipping 1300 matching lines @@
   Platform::Exit(Process::GlobalExitCode());
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   dart::bin::main(argc, argv);
   UNREACHABLE();
 }